H11: section a through f - the information provided by bd represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bd.The following were reviewed as part of this investigation: patient severity, complaint and batch history, labeling, applicable manufacturing records, sample analysis and applicable fmea documents.Based on a review of this information, the following was concluded: the complaint of a kinked guidewire was confirmed but the cause is unknown.No residual material was seen on the returned sample.The distal end of the guidewire was not found protruding from the tip straightener but was instead caught within the packaging loop/tip straightener.The proximal end of the guidewire was seen protruding from the packaging loop.Kinks were noted 0.3¿, 0.6¿, 0.7¿, 0.8¿ and 1.4¿ from the distal end of the guidewire.Microscopic examination revealed that the coils on the wire were misaligned where the wire had been kinked but the coil wire was unbroken.Examination of the distal end of the wire confirmed that the weld tip was intact.An attempt was made to pass the guidewire, through the tip straightener.The guidewire would bend in the kinked locations and therefore could not be easily passed through the tip straightener.The guidewire was then fed through the tip straightener, starting with the stiff proximal end.The guidewire could be fed through the tip straightener, indicating that there is not a stack-up issue between the guidewire and the tip straightener.A small amount of resistance was felt when feeding the kinked section through the tip straightener as the kinks rubbed along the inner walls of the tip straightener.Based on evaluation of the sample, possible contributing factors include manufacturing related causes (e.G.Damaged component used or forcing the guidewire into the packaging sheath) of use related causes (e.G.Forcing the guidewire against resistance in the tip straightener or introducer needle).However, the exact root cause cannot be determined at this time.
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